What is the sampling in 3D max?

The landlord should refer to the super sample of 3dsmax. Let me talk about the principle of sampling first.

Sampling is a term related to rendering, that is, sampling pixels for comprehensive operation. The simple understanding is that the higher the sampling rate, the better the rendering quality.

But there are many kinds of sampling, which appear in max and many renderers. Some are sawtooth sampling, some are projection sampling, some are global illumination sampling, some are ray tracing sampling, and so on. The division of labor is different, but the purpose is to improve the rendering accuracy.

Let's talk about supersampling first.

Ordinary scanning line rendering sometimes finds some burrs, horizontal stripes or sawtooth in the picture. In order to eliminate these defects, it is necessary to start supersampling. Oversampling is a simple pixel enhancement algorithm, and its accuracy can be as small as1100 pixels. After starting supersampling, the problems mentioned above are basically solved, but the rendering speed is greatly improved, so supersampling can only be used when there is a problem.

Only after max3, several sampling types have been added, but these are professional-level algorithms, which don't need to be concerned for basic users. For details, when you select the sampling method in the Rendering panel, you will see the following text explanation algorithm. For example, the algorithm of max 2.5 star is to enhance every five pixels, and the pixels are arranged in the shape of a five-pointed star. Of course, it goes further than the default square algorithm and is basically applicable to all situations. Hammersley (this is a personal name) is 4 to 40 sampling points, the pixels in the X direction are continuous, the Y direction is random, and the rest are determined by the program. Because the X direction is continuous, it is especially suitable for the situation where the foreground is jagged. For example, the sawtooth of tile floor extending to the distance is more and more obvious. This algorithm can be considered at this time. There is also a blur filter, which is simply a blur filter. If you want to blur, go to the later software to deal with who is wasting time here.

In fact, oversampling is very rare. Moreover, these algorithms are difficult to distinguish the difference with the naked eye, so if they are basically used, it is enough to use the earliest max 2.5 star algorithm. It's really dizzy to offer so many choices.